Follows the story of a boy named Yuusuke, who encounters Robomaru, a small red robot with a rabbit-like appearance. After some repairs, the two become friends and start fighting against other robots in tournaments.

A short two-part adaptation of the first level of *Klonoa: Door to Phantomile*, as part of Dengeki Nintendo magazine's coverage of the Wii remake.

*Note: This manga never got a tankōbon release.*